The end of the world?NO!National Aeronautics and Space Administration 美国国家航空和宇航局 Nibiru(尼比鲁), a purported large object headed toward Earth, simply does not exist. The Mayan calendar does not end in December 2012. Another long-count period begins after December 21,2012. There are no credible predictions for worrisome astronomical events in 2012. The activity of the sun is cyclical with a period of roughly 11 years and the time of the next solar maximum is predicted to occur in the period 2010 2012. The Earths magnetic field, which deflects charged particles from the sun, does reverse polarity about 400,000 years but there is no evidence that a reversal will begin in 2012. The only important gravitational tugs experienced by the Earth are due to the moon and sun. Their effects on the Earth could be ignored.The end of the world doesnt exist. The sun will always rises in the east. Thank you !